AML Series All Material Locators from SubSurface Instruments use modulated, powerful 2.45 GHz ground-penetrating, UHF radio waves to locate subsurface objects. Using technology that was developed for lunar exploration, it locates materials indiscriminately, including PVC, PE, metal, wood, cable or pipe. It will work in clay, wet soil, snow and standing water. Man-made objects with a straight edge create a change in density or permeability from surrounding materials, which causes refracted radio waves to be detected by the AML. The highly sensitive dual left and right receivers activate a laser indicator that highlights the buried object’s position on the ground. It includes GPS plotting and tracking, and it has 32 sensitivity settings. 855-422-6346; www.ssilocators.com.